On mine I have md raid1 configured for /boot.  Old install no
/boot/efi but it should also work for /boot/efi because even with
mdraid the bios/efi will still be able to find what it needs to find
to boot but when the OS comes up it mounts the md-raid raid1 devices.

This would allow you to survive a disk failure, but not survive a bad
deletion at the fs level.

On Tue, Jun 18, 2024 at 12:59 PM Frank Bures <bur...@gmail.com> wrote:
>
> On 2024-06-18 13:52, Frank Bures wrote:
>
> >
> > Just to explain:
> >
> > I do not dd the whole /dev/sda.  There are only /boot and /boot/efi
> > partitions on the disk, the rest is unformatted.  I only dd the formatted
> > sectors.
> >
> > The whole idea of having the same UUID on both sda and sdg is the ability
> > of just booting from the other disk in case of sda failure without having
> > to reconfigure anything.  Now I understand the problem this arrangement
> > creates.
> >
> > If I understand correctly, doing rsync backup would not guarantee this
> > direct boot functionality.
> >
> > Any other thoughts?
>
> Or I could just live with it.  Let the machine decide, which disk it wants
> to mount and then copy the boot disk to that disk.  I could even automatize
> the backup script to make the decision by itself.  In fact, there is no
> difference between mounting sda or sdg as /boot if they are the same with
> the same UUID..
>
> Cheers
> Frank
>
>
> --
>
> <listfra...@gmail.com>
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